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Validation and derivation rules

APRA uses validation rules in D2A to validate the data submitted by reporting entities. Entities are expected to correct any reporting errors identified by these rules.

Validation rules

There are two types of D2A validation rules: mandatory and confirmation rules. Mandatory rules identify data, within D2A, that contain mathematical errors and discrepancies or factual inconsistencies. Entities must correct all data that fail mandatory rules to submit data via D2A. Confirmation rules identify data, within D2A, that indicate reporting errors or require explanation. Entities are expected to correct or explain data identified by confirmation rules within D2A.

Derivation rules

Derivation rules are formulae that automatically calculate ('derive') values for attributes, in most cases using the values for other attributes as inputs.

Forthcoming issues

The rules are updated two weeks prior to the end of each quarter ending 31 March, 30 June, 30 September and 31 December. 


Technical issues?

  1. Please refer to the Common D2A errors page.
  2. Additional information can be found in the: 
  3. Log a support request with the D2A Help Desk at
  4. For urgent issues call +61 2 9210 3400 between 9am and 5pm AEST weekdays.

Need help with myGovID?

Refer to the ATO myGovID website.

Need help with data validation rules?

The D2A Help Desk cannot assist with validation errors or warnings in D2A returns. For information on validation rules and guidelines, refer to your industry's Reporting requirements page.

For further enquiries about validation rules, please contact: